1. Division of Clinical Genetics, Department of Laboratory Medicine; Lund University; 221 84 Lund Sweden
2. Department of Experimental Medical Science; Lund University; 221 84 Lund Sweden
3. Science for Life Laboratory, Department of Physics, Chemistry and Biology; Linköping University; 581 83 Linköping Sweden
4. Department of Orthopedics, Clinical Sciences; Lund University and Skåne University Hospital; 221 85 Lund Sweden
5. Department of Pathology, Office for Medical Services, Division of Laboratory Medicine; 221 85 Lund Sweden
6. Department of Pathology; Brigham and Women's Hospital, Harvard Medical School; Boston MA 02115 USA
7. Department of Clinical Genetics, Office for Medical Services; Division of Laboratory Medicine; 221 85 Lund Sweden